package ch9.例子4;

public class Example9_4 {
	public static void main(String args[]) {
		double aver = 0, sum = 0, item = 0;
		boolean computable = true;
		for (String s : args) {
			try {
				item = Double.parseDouble(s);
				sum = sum + item;
			} catch (NumberFormatException e) {
				System.out.println("您键入了非数字字符:" + e);
				computable = false;
			}
		}
		if (computable)
			System.out.println("sum=" + sum);
	}
}
